Brake-hanger



T. 'L. BUR-TON.

BRAKE HANGER. APPLICATION FLLED JUNE l2. |918.

1 ,328 ,3 1 5 l I Patenpd Jan. 20, 1;-920.`

INVENTOR narran STATES PATENT carica i I THOMAS L. BURTON, F ST. LOUIS,MISSOURI, A SS'IGNOR TO"THE AMERICAIN-BRAKE COMPANY, 0F ST. LOUIS,MISSOURI, CORPORATION OF NIISSJ'LTRIr emma-HANGER. f

ASpecification of Letters Patent.

Application filed June 12, 1918. i Serial No. 239,509.

To all whom t may concern:

Be it known that I, THOMAS L. BURTON,

a citizen. of the United States, residing at St. Louis, in the State ofMissouri, have invented aI certain new and useful Improve-- ment inBrake-Hangers, of which improvement the following is a specification.

This invention relates to mechanism for suspending brake shoes and hasfor its primary object to. provide an improved and practica] means forcontrolling the release l' of brake shoes whereby the shoe clearanceshall remain practicallyuniform and constant at all times regardless ofthe wea-r Vof the shoes and of the varying diameter of they wheels. f

Generally stated m improvement comprises a movable brac (et membernormally adapted to move withthe brake shoe hanger during theapplication 'and release movements ofthe shoe, but having a yielding orslidable connection with the hanger which permits of a short relativemovement therewith when the4 application movement is lengthened duetowear, there being also stops for' limiting the movement of the vbracketmember in both directions.

In the accompanying drawing Figure 1 is a side elevation of one form ofbrakev suspension embodying my improvement; and Fi 2, an end elevationof the samej ccording to the construction shown the 'brake shoe 3 issuspended by means of the `hanger 4 pivotally attached at its upper athe truck frame, preferably on the samey pin 5, with the hanger, and isso connected end to the truck frame by the pin 5. Thev bracket member 6,1s pivotallv mounted on as to normally move with the hanger during itsfree application and release movements. This connection comprises thebolt 7, carried by the hanger extending through the slot 8, formed inthe bracket member 6, and

provided with a spring washer and nut 9, for

adjusting the frictional en "agement between these parts, wherebv arelative sliding movement may occur between said parts when y there isan excessive travel of the brake shoe due to wear.

'l'he oracket member is provided with a lug or stop 10, adapted toengage a fixed part 11 of the frame for limiting the forward movement ofsaid member when the shoe is being applied to the wheel,

'and another stoe 12 adapted to engage the frame t/olmit the backward orrelease moveapplication when the sto ment of the bracket member andhanger.

rigging may be employed for actuating the brake shoes, such'as the well`known design4 in which each brake beam 13, is attached to Patented Jan.20,1920.

Any suitable or preferred form of brake truck levers 14, actuated bypull rods 15,

ber there will be a small yielding or relative sllding'movement"betweenthe bracket member and' hanger such as may be necessa to ,Iver-mm the'shoe to bear firm' y upon thaw eel hen when the brake" shoe is releasedthe stop 12, comes in contact with the frame and l'imits'the releasemovement'ofthe vhanger and the clearance of the shoe to the desiredamount.

The frictional resistance between the bracket and hanger is so adjustedby the'nut 9, as' to hold' the parts rigidly together during thereleasemovement and at the time of the engagement of the stop 12,`but isadapted to be overcome by'theforce of the' frame 1l, before v the'shoe1s brought against 4the wheel and permit a relative sliding movementbetween the bracket and hanger duringl the further movement of thelatter in the application. It will then be seen that this operationresults in the automatic adjustmentl of the bracket relative to thehanger at 'each application, such as is necessary to compensate for thewear and maintain a uniform and constant amount of clearance at eachrelease movement of the brake shoe.

What I claim is:

1.` In a brake device,the combination ofa brake hanger pivotally`attached to the truck frame, a brake shoe pivotally connected to saidhanger, a bracket member also mounted on the frame and having a yieldingfrictional connection with the hanger, a stop for limiting the,releasemovement of said bracket member, and another stop for limiting' theforward movement pf said bracket member in application,

10 engages the..

2.. Ina brake. device, g brake hanger plvotally attached to the truckframe, a brake shoe pivotally connected to said hanger, a bracket membermounted onv the same pivot With the hanger and having a yieldingfrictional connection thereWith5 and stops Carried by said bracketmember for limiting the movement of said bracket member in bothdirections.

In a brake device, the combination of.

a brake hanger pivotally attached to the truck frame, a brake shoe4pivotally conthe combination of a `nected to said hanger, a bracketmember also mounted on the frame and having a s'lot,'a

b olt carried by the`l1anger and extending. through said slot, a nut onsaid bolt for adjusting the frictional engagement between the bracketmembei and hanger, and stops carried by said bracket member Jforlimiting the movement of the bracket member.

In 'testimony Wherecf I have hereunto set my hand. i A

lTILIOMAS L. BURTON.

